I also think your numbers are relatively unrealistic. Is Dunk really only on £6k per week? I know this is only an illustration, but I suspect he is on more than that, and I doubt you can get as good a centre half for £10k per week.
I understand that, although do you really believe that the full value of any transfer of Dunk would be reinvested. Arguably if we sell a centre half for £5million whatever we replace him on should be on less money? I guess an older pro might not be. Be even so, it is hard to believe the full...
Those that make the case for selling him seem to be suggesting we can use the money elsewhere, i.e if we get £5m we can invest £2m in a winger and £3m in a centre half.
When have we ever reinvested all the money we have received from selling a player.
Certainly not recently. We still haven't...